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<html><head><title>Building a Concert Classical Guitar - Kerfed Linings</title>

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<h1>Kerfed Linings</h1>

<p>To produce kerfed linings, proceed as follows:</p>

<ul>
<li>Cut a length of 10&times;22 mm timber at the diagonal line</li>
<li>Cut at regular intervals into the top, down to approximatly 0.7 mm to the bottom.</li>
<li>The distance between cuts mus be smaller where the side are bent at a smaller radius.</li>
<li>Protect the slotted side with masking tape to prevent the strip from breaking.</li>
</ul>

<p>The strip is now highly flexible, and should easily follow the curve of the sides, without distorting them.</p>

<p>To create accurate kerfs with the exact dept, use a back saw and a U-shaped miter box. The limbs act as a depth stop for the saw.</p>

<p>Traditionally, the kerfs are oriented to the inner of the sound box. But a look at Stewmac's, they also sell "reverse kerfed" linings. The advantage is that the glue squeeze-out can run into the kerfs &mdash; this reduces the need for cleanup. Additionally, the openings for the sound bars look very nice and clean.</p>

<p><img src="../img/fig-083.jpg" width ="200"/></p>

<p>The <a href="http://www.advancedshelltech.com">AST</a> company sells a special "A4" lining. The kerfs are made on <em>both</em> sides, which gives it additional flexibility on the length axis.</p>

<p><img src="../img/fig-082.png" width="200"></p>

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